Shade structure



FIG. 1 is a perspective view of the shade structure;

FIG. 2 is a plan view of the structure of FIG. 1;

FIG. 3 is an end view of the structure of FIG. 1; and,

FIG. 4 is an elevation view of the structure of FIG. 1. 

CLAIM The ornamental design for a shade structure, as shown and described. 